Back now at 7:42, with what may be the most violent giraffe attack caught on tape. Stunning video shows them using their six-foot-long necks as weapons to go after one another. Paula faris has the story. Reporter: Huge claus. Sharp teeth. And addressive antlers. All familiar weapons of the wild. Now in this rare video, two unlikely frirgts sticking their next the ring. That's wright, giraffes. The long-necked animals. Watch as they jab their horning into each other. Swinging their fwhex necks with 500-pound force. It's a bit of a dance. The males know where to stand, now stand, and what the rules are. Reporter: The group spent a month in namibia when the subjects revealed another side. People tend to think of giraffes as nice, docile, sweet animals. They generally are. But they're designed for fighting. Reporter: Their fighting over territory, and likely a mate. But not to the death. The smaller, younger male will go away, get big, he'll be back next season. Reporter: We may expect fights from predators like these bears or this lioness lunging at the camera, remember a cute face like this may be bulking up for battle. For "good morning america," paula faris, abc news, new york. That just hurts. I'm obsessed with these shows, by the way. Good. Because guess what? You can see more of it on the discovery series, africa. IT DEBUTS ON JANUARY 8th.

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